It keeps turning itself on and off again. I've looked at stuff like adjusting the resolution and brightness but it didn't seem to do anything. When I started up in safe mode though it behaved like normal, also when I did a system restore. But over the last 2 nights it's decided to be a bastard.

It is quite an old, shitty ViewSonic to be fair but I want to make sure it's the actual monitor that's the problem rather than something I can do to fix it.